baber/WOPTO huggingface dataset:
Patent GB-951593-A (GB)
Title: Improvements in rack-type advancing mechanism for mine roof supports
IPC: E21D23/04
Filed: 1960-06-10
Abstract: 951,593. Advancing mine roof supports. RHEINSTAHL WANHEIM G.m.b.H. June 10, 1960, No. 20539/60. Heading E1E. An advancing mine roof support comprises two support frames A, B coupled to a guide rail 24 which is connected to the footplates 3, 4, 17, 18 of the props 1, 2, 15, 16 by spacers 22 and vertical guide members 21. Each support frame is provided with a rack 27 embracing the guide rail, each rack having limited vertical movement on the guide members 21 and being longitudinally advanced by a portable compressed air or electric motor driving through gear means 31, 32 slidable on the racks. The racks carry brackets to engage stops on the rail 24 in order to entrain same during their advance, see Fig. 2 (not shown). In a modification, the guide rail 24 and spacers 22 are dispensed with, the two rails being supported by the housing of the transmission gear, see Figs. 8, 9 and 10 (not shown).
Patent GB-752416-A (GB)
Title: Improvements in or relating to gripping devices for lifting objects of annular cross-section
IPC: B66C1/24
Filed: 1954-07-14
Abstract: 752,416. Cable reels. NATIONAL-STANDARD CO. July 14, 1954 [Aug. 13, 1953], No. 20594/54. Class 99(2). [Also in Group XXX] An inflatable annular bag 23 is carried by a drum 29 for engagement within a coil 11 of wire or cable to support the coil from a lifting eye 17 or 18 secured to the drum. In the form illustrated two lifting eyes 17, 18 permit the coil to be suspended in two alternative positions and are carried by tubular members 14, 15 through one, 14 of which passes the tube 24 by which the bag is inflated. The tube 24 terminates in a valve 20 similar to that employed in inflating automobile tyres and fitted with a venting valve 22. The inflatable bag 23 is formed with a wire bead 27 fitting within a channel 30 in the drum 29 which is welded to an end plate 28 welded to the tube 15 and is connected by screws 32 to a flange 33 also welded to the tube 15.
Patent GB-1138705-A (GB)
Title: Improvements in or relating to heat transfer arrangements
Inventor: CROFT EDWARD FRANCIS BEVERLEY
IPC: F28D19/00
Filed: 1966-05-10
Abstract: 1,138,705. Heating or cooling metal strip. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 20 April, 1967 [10 May, 1966], No. 20676/66. Heading F4U. [Also in Division C7] In an evacuated chamber, heat is transferred between a metal strip and a hot or cold surface by a rotating cylindrical brush whose bristles contact the strip and the surface. As illustrated, metal strip 39 after passage over a heater 43 is cooled by contact with the bristles of brushes 33L which also contact a surface 49 cooled by the flow of a coolant in a chamber 51. Brushes 33u serve to transfer heat from the lower to the upper pair of metal strip in order to preheat the latter. The brush bristles may be strands of nickel silver wire. In another embodiment, Fig. 1 (not shown), the metal strip makes a single pass through the evacuated chamber and two brushes, one on either side of the strip, transfer heat to the strip from two electrically heated surfaces.
Patent GB-153701-A (GB)
Title: Improvements in heating elements for electric furnaces
IPC: H05B3/66
Filed: 1919-08-22
Abstract: 153,701. Smalley, E. L. Aug. 22, 1919. Resistance furnaces.-A removable heating-unit for a crucible or other furnace consists of a hollow muffle with longitudinal grooves on its exterior surface, and a preformed resistance grid of stout material, the parallel lengths of which are adapted to fit in the grooves. The muffle may be of circular, rectangular, or other section. As shown in Fig. 1, a grid :resistance 6 is mounted in grooves on a tubular muffle 5 arranged inside a housing 1, the bends of the grid being carried by notched supports 10, which may be moulded into the housing. The grid may be expanded by heat to facilitate fitting on the muffle. In a modification for use in a crucible furnace, the muffle is arranged vertically and has cylindrical collars extending at the ends. In another arrangement, Fig. 8, a rectangular muffle is formed in sections 19 the ends of which are recessed to receive the bends. The grid may lie over a part only of the muffle, and the lengths between the bends may be other than straight.
Patent GB-1317864-A (GB)
Title: Air supply device for ventilation
IPC: F24F13/068
Filed: 1971-04-19
Abstract: 1317864 Ceiling ventilators SVENSKA FLAKTFABRIKEN AB 19 April 1971 [26 Feb 1970] 20815/71 Addition to 1241528 Heading F4V A ceiling mounted air supply unit as described in Specification 1,241,528 is modified in that one outlet gap 21 includes individually adjustable damper blades 18 mounted for rotation about vertical axes and that the opposite gap, which is adjacent the wall of the room, is closed by a plate 19. The remaining outlet gaps are each provided with a damper blade 12 rotatable about a horizontal axis.
Patent GB-711683-A (GB)
Title: Attachment for child's chair
IPC: A47D15/00
Filed: 1952-08-19
Abstract: 711,683. Nursery seats. WILSON, A. R. .July 8, 1953 [Aug. 19, 1952], No. 20841/52. Class 52(2) An attachment for a child's chair comprises a multi-armed spider which is adapted to be rotatably mounted as at 2 to the front edge of the chair's tray 8, the arms of the spider being shaped so that its free end is situated over the tray. A flexible extension 5 with eye 6 is provided on each arm whereby a toy may be suspended therfrom. Any action of the child tending to throw the toy over the side rotates the spider and brings another toy into place above the tray.
Patent GB-439027-A (GB)
Title: Improvements in or relating to rotary piston engines
IPC: F01C1/344
Filed: 1935-07-23
Abstract: 439,027. Rotary engines. STURM, E., 7, Querstrasse, Botnang, Stuttgart, Germany. July 23, 1935, No. 20889. Convention date, July 23, 1934. [Class 110 (ii)] In a reversible engine of the sliding-vane type having a rotary outer drum 12, discs 21 are mounted upon the necks of the eccentrically - positioned rotor 5 to support the end covers 13 of the drum 12. The vanes are guided by pins 18 bearing on annular projections 17 of the covers 13. The rotor 5 is supported on a sleeve 10 mounted on a stub shaft 32 which is secured in a partition 2 and contains inlet and outlet ports 30, 30<1>, Fig. 3, which lead to passages 29 and to the crescent-shaped working chamber. The rotor is secured to a driving shaft 4 mounted in a bearing 11. The outer drum 12 is mounted to rotate freely, due to vane tip friction, in supports 23 fixed on piston-like guides 24. The latter may be moved by a lever 28 to press inwards the drum 12 to vary the eccentricity between the drum and the rotor. In the extreme left-hand position of the guides 24, the rotor pumping action will be reversed. Fluid contained in the well of the frame 1 enters one or other passage 34 or 34<1>, by way of a ball valve 35 or 35', and may be delivered to an engine forming part of a hydraulic gear transmission. Sealing oil is carried in annular chambers 36, 36<1> and is maintained as oil rings due to centrifugal action of the rotor and drum. Excess oil leaks off at the lefthand end through a passage 37 and is regulated by a valve 39 containing a differential piston 41 biassed to the right by a spring 40. The excess oil passes through apertures 48, 45, 46 to the fluid chamber. A screw 49 is used for adjusting the spring 40 axially. The oil pressure in spaces 36, 36<1> which communicate through the slots 6, presses the vanes outwards. Fluid under pressure also passes through a passage 44 to lubricate the journal 8, and a ring of oil, produced centrifugally, seals against air inlets to the pumping spaces. In a further arrangement the rotor 5 is supported by conical bearings the inner races of which bear against the discs 21.
Patent GB-723880-A (GB)
Title: Production and purification of titanium
IPC: C22B34/12
Filed: 1951-09-05
Abstract: In a process for distilling titanium from titanium-bearing material by the intermediate formation of its normally stable halide, the vapour of a halide of the group consisting of alkali and alkaline earth metal chlorides, bromides and iodides and the mixed alkali metal titanous fluorides is contacted and reacted with the titanium-bearing material at elevated temperature and the resultant vapour mixture led into a cooler zone where it is reconverted into metallic titanium and the original halide.  The process is preferably carried out at reduced pressure and with the halide vapour unsaturated with respect to the condensed halide. The reaction temperature may vary from 1150-1400 DEG  C.  The mixed alkali metal titanous fluoride may be made by reducing an alkali metal hexafluotitanate, to which an excess of alkali metal fluoride has been added, with metallic titanium at elevated temperature or, if an alkali metal (e.g. potassium) pentafluotitanate is required, by hydrogen reduction of alkali metal (potassium) hexafluotitanate. Specification 666,869 is referred to.
Patent GB-885117-A (GB)
Title: Improvements in or relating to the preparation of a solid element by thermal decomposition of its hydride
Inventor: STERLING HENLEY FRANK
IPC: C01B33/029
Filed: 1957-07-03
Abstract: Elemental silicon or germanium is produced by decomposing a gaseous hydride of the element by means of electro-magnetic radiation of high frequency.  As shown, a hydride, e.g. silane, optionally together with hydrogen, is passed <PICT:0885117/III/1> through a pipe 9 into an annular decomposition chamber comprising an outer tube 1 and an inner internally water cooled tube 2 connected at one quarter of a wavelength from the upper end of the decomposition chamber to an alternating current generator 10. Tubes 1 and 2 are insulated from one another by a closure disc 7 and a perforated separating disc 8. Tubes 1 and 2 may be of silver and discs 7 and 8 of polytetrafluorethylene.  The decomposition chamber protrudes into an enlarged quartz vessel 4 and is of such length that the hydrogen atoms produced in the decomposition combine in a zone 19 at the outlet of the decomposition chamber.  The silicon or germanium produced in the decomposition is absorbed into a drop 20, adhering to a rod 13, and maintained molten by the heat evolved in the atomic combination.  As absorption proceeds, rod 13 is lowered to allow crystallization of liquid on to the rod.  Argon is passed into the vessel 4 through an inlet pipe 17 and reaction product gas is removed through an outlet pipe 18.  5 Kw. of electricity may be supplied at a frequency of 0,5-1000 Mc/sec., preferably 500-1000 Mc/sec.  A monocrystalline rod may be grown from a monocrystalline seed.  The resulting rod may have a diameter of greater than 2,5 cm.  N- and P-type material may be produced by adding diborane and phosphine respectively to the hydride.  Successive layers of N- and P-type material or of N-, intrinsic-, and P-type material may be produced. Specifications 745,698, 778,383 and 829,422, are referred to.
Patent GB-479044-A (GB)
Title: Improvements in or relating to brake mechanism for cycles
IPC: B62L1/16
Filed: 1936-07-29
Abstract: 479,044. Cycle brakes. BOWKETT, W. N., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 29, 1936, No. 21035. [Class 136 (i)] In a cycle brake of the calliper type, the levers carrying the brake blocks are each provided with an open slot at the upper end, such slots being engaged by rollers, pins, sliding blocks, &c. secured to and enclosed within an arched bridgepiece, which, when raised by means of Bowden &c. mechanism, causes separation of the upper ends of the calliper levers. The brake levers 6 are pivoted on pins 7 secured to lugs on the cycle frame members 9, and are provided at the upper ends with open-ended slots 10 to receive sliding blocks &c. or rollers 11 mounted on pins 12, which are fixed between the two side plates of an arched bridge-piece 14 connected to the inner wire 15 of Bowden actuating-mechanism. The bridge-piece 14 is formed of folded sheet metal, and may be of closed form except at the ends which receive the arms of the levers, so that the relativelysliding parts are fully protected. The bridgepiece 14 is adapted to contact with a stop, e.g. the flat face 22 of a bracket 17 supporting the outer casing 16 of the Bowden cable, whereby movement of the levers at rightangles to the plane of pivoting is prevented. A single retracting-spring 19 has its central part clamped in a groove in the bracket 17.
Patent GB-404054-A (GB)
Title: Improvements in cut-offs for cigarette making machines
IPC: A24C5/28
Filed: 1932-07-26
Abstract: 404,054. Cigarette-making machines. CHANDLER, R. J. A., 58, Holborn Viaduct, London. July 26,1932, No. 21044. [Class 130.] In cut-off mechanism for continuous-rod machines the cutter and ledger plate mountings 18, 23 move in distinct orbital paths. Spaced crank-shafts 10, 11 driven in opposite directions from the main shaft 30 cause the mountings 18, 23 carried by the crank-pins 16, 17 alternately to approach and recede from each other. Telescopic interengaging guides 25, 26 working in adjacent ends of the mountings 18, 23 preserve the latter in correct relative alignment. A spring clutch 36, 37 permits adjustment of the cutting mechanism relative to the rodforming mechanism. The cutter-shaft 19 is rotated through bevel-gearing 28 at twice the speed of the crank shaft 10. Specifications 292,635, [Class 60, Grinding or abrading &c.], and 353,492 are referred to.
Patent GB-152311-A (GB)
Title: Vacuum tube
IPC: H01J21/20
Filed: 1920-07-12
Abstract: 152,311. Loewe, S. April 20, 1918, [Convention date]. Thermionic relays. -A vacuum tube, for use in telephone systems, utilizes the interference between two electron streams emitted from two cathodes. As shown in Fig. 3, two cathodes 2, 3 heated by batteries 6 provide electron streams tending to pass to anodes 4, 5 respectively, between which an additional anode 17 is mounted. It is stated that the streams interact and pass with increasing velocity to the anode 17, which is thereby charged to a higher potential than that of the anode batteries 21. The anode 17 is connected with one terminal of a condenser, the other terminal of which may be earthed. The leads 19, 20 or the lead 20 and earth may be used in a telephone circuit. The cathodes may be earthed. According to the Specification as open to inspection under Sect. 91 (3) (a), similar apparatus may be used as an amplifier or relay. In one arrangement, Fig. 5a (Cancelled), a grid 32, to which incoming oscillations are applied, is mounted adjacent to one cathode 31. Current of audio-frequency may be produced between the cathode 34 and anode 35. One or both of the electrodes 34, 35 may be interposed in the path between the cathode 31 and anode 33, and may act as grids. A magnetic or electrostatic field may be used for increasing the interference between the streams. In another arrangement, Fig. 9 (Cancelled), two electron sources such as mercury, cathodes sensitive to light, or cathodes 52, 53 heated by current from batteries 54, 55, are connected with a source of alternating-current 60, and an indicating instrument 61. contact-making relay, or telephone receiver. If the emission from one cathode is made greater than that from the, other, by varying the heating current, or by means of one or more control grids, or an electrostatic or magnetic field, the instrument &c. 61 will be operated by the continuous-current component of the resulting current. A conducting plate may be mounted adjacent to and connected with each filament so as to increase the effective " receiving " surface. This subject-matter is not included in the Specification as accepted.
Patent GB-351758-A (GB)
Title: Improvements in and relating to control systems for aeroplanes and other moving craft
IPC: G05D1/08
Filed: 1930-07-11
Abstract: 351,758. Steering aeroplanes and other craft. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.- (Assignees of Rhea, T. R. ; 1031, Wendall Avenue, Tear, J. D.; 56, Washington Avenue, both in Schenectady, New York, and Green, C. F.; 1105, South Douglas Street, Urbana, Illinois, both in U.S.A.) July 11, 1930, No. 21063. Convention date, July 12, 1929. [Classes 4 and 114.] For maintaining aeroplanes and other moving craft upon a set course a rudder is automatically given a series of impulses in one direction or the other whenever the craft moves off its course, a direction sensitive device, such as a magneto compass as described in Specification 342,038, [Group XXXVI], controlling the impulse mechanism through electric discharge devices. The magneto compass comprises a winding 19 rotated by an air turbine 35 between the enlarged ends of two polepieces 21, 22 pendulously suspended in a member 25 which can be set in azimuth by a worm and worm wheel operated from a knob 83. The polepieces 21, 22 are adjusted so that they are at right-angles to the earth's magnetic field when the craft is on its course and consequently no current is generated in the winding 19. A deviation in either direction causes current collected from a commutator 36 to flow through a galvanometer winding 41 and move a finger 43 into contact with one or other of two studs 44, 45 connected through biasing batteries 60, 62 to the grids of two electric arc-discharge tubes 12, 13 containing mercury vapour. Normally the grids are kept negative by batteries 59, 61 through resistances 63, 64. The plates 48, 51 of the discharge tubes are connected to solenoids 52, 57 in circuit with brushes 53, 58 rubbing on a disc 54 connected to a battery 56 for applying a positive voltage to the plates 48, 51. The disc 54, which has two insulated segments 70, 71, is continuously rotated by a motor 15 acting on a wheel 18 which has one or more cams 65, 66 adapted to engage either of two followers 16, 17 when the appropriate solenoid 52 or 57 is energized. The followers 16, 17 are mounted on an arm 14 pivoted at 72 and connected to a rudder 14a so that as either follower is depressed the rudder receives impulses to one side or the other. No current flows through the tubes 12, 13 as long as their grids are negative but as soon as either grid is rendered positive by the closing of one of the contacts 44, 45 an arc discharge is initiated and the corresponding follower 16, 17 is depressed into the path of the cams 65, 66. Alternatively the solenoids may act directly on armatures carried by the rudder lever, a continuously-driven disc similar to the disc 54 being provided to render the action intermittent.
Patent GB-1009515-A (GB)
Title: Containers for beverages and other liquids
Inventor: DOWNIE GEORGE
IPC: B65D81/24
Filed: 1963-05-28
Abstract: 1,009,515. Discharging liquids by gaseous pressure. GASKELL & CHAMBERS Ltd. May 26, 1964 [May 28, 1963], No. 21222/63. Heading FIR. In a container 10 for liquid which may be discharged through a vertical drip tube 13 by gaseous pressure, a plate 14 which is axially movable on the drip tube extends across the interior of the container to reduce the area of contact between the gas and liquid. The gas may be compressed air. The plate 14 is arranged to float on the liquid. Specifications 930,015, 1,009,512 and 1,009,513 are referred to.
Patent GB-531425-A (GB)
Title: Carrier current transmission systems
IPC: H04B3/10
Filed: 1939-07-21
Abstract: 531,425. Automatic volume control. STANDARD TELEPHONES & CABLES, Ltd. July 21, 1939, No. 21254. Convention date, Sept. 28, 1938. [Class 40 (iv)] [Also in Group XXXV] In a carrier transmission system, a regulator arranged to introduce equal changes in attenuation at all frequencies is controlled by a pilot current of one frequency and a regulator arranged to introduce changes in attenuation which are different for different frequencies is controlled by a pilot current of a different frequency, a third regulator which introduces equal attenuation changes at all frequencies coming into action in an extreme position of the second regulator. As shown, a 92 Kc. pilot is picked off at 59, 60 and controls motor 11 in known manner to increase or reduce the flat loss introduced by a condenser potentiometer arrangement 5...10. A 140 Kc. pilot is picked off at 61, 62 and controls motor 19 to control condenser coupling arrangement 21 .. 29 which may have plates shaped to conform with any law to determine which of networks I ... VII shall be effectively in the transmission circuit. These networks all have the same loss at 92 Kc. and progressively greater losses at higher frequencies. When conditions are such that the insertion of network VII is unable to bring the 140 Kc. pilot to zero level, motor 19 brings in an additional flat attenuator in the form of a condenser device 13 ... 15. The roles of the pilots may be interchanged. Amplifier 31 may have a negative feed back path containing a frequency discriminating element.
Patent GB-1008812-A (GB)
Title: Moisture or water barrier at joints in concrete structures
Inventor: HURST JOHN
IPC: E04B1/68
Filed: 1963-01-14
Abstract: 1,008,812. Waterstops. TRETOLSERVICISED Ltd. Jan. 3, 1964 [Jan. 14, 1963], No. 21267/65. Divided out of 1,008,811. Heading E1G. A moulded or extruded waterproof flexible waterstop has a strip-like body 1 with outwardly broadening keying formations 3, 4 on one side only and a marginal portion outboard of the keying formations. The formations may be of inverted triangular or T-section. The centre of the strip may be formed concave to provide increased transverse expansion, while the marginal portion may be nailed to the shuttering.
Patent GB-381635-A (GB)
Title: Improvements relating to dash pots
IPC: F16F9/10
Filed: 1931-07-25
Abstract: 381,635. Dashpots. ELLISON, Ltd., G. and ELLISON, G., Wellhead Lane Works, Perry Bar, Birmingham. July 25, 1931, No. 21336. [Class 108 (iii).] A dashpot which is adapted for controlling the solenoid plunger in an electric circuit-breaker tripping mechanism comprises a cylinder a containing oil or other fluid, the cylinder having a tapered bore at b in which normally rests the outer piston portion f. The piston-rod g carries an inner portion e of the piston, the outer and inner portions of the piston being tapered internally and externally so that there is a normal working clearance between these portions. A spring j extends between the lower piston portion and a sleeve h which is normally held against a shoulder i on the piston-rod, the upper end of the sleeve being a small distance from the transverse portion of the outer piston part f. With moderate pulls on the piston corresponding to moderate overloads the inner piston portion is first moved upward relatively to the outer piston portion until the upper end of the sleeve h engages the transverse part of the outer portion f so that the space between the piston portions, while greatly reduced, is not completely closed and the oil has two parallel paths, one between the periphery of the outer piston portion and the cylinder wall and the other between the two piston portions, the oil in the latter path passing through a hole or holes l in the upper piston portion. If desired the flow through the latter path may be further retarded by a plate m resting on the upper piston portion as shown. With very strong forces applied suddenly to the piston, however, the upward force on the lower piston portion, in addition to the movement between the piston portions already described, produces extra relative motion between the pistonportions due to compression of the spring j, so that the space between these portions is completely closed and the flow of oil entirely restricted to the path between the periphery of the outer piston portion and the wall of the cylinder. After the force acting on the piston rod is removed the piston parts return to their original position, the rate of restoration being rapid owing to the separation of the piston parts due to the spring j and also to relative motion between the upper end of the sleeve h and the transverse part of the outer piston portion f. The disc m rises in the return motion allowing a free flow of oil through the holes l. Specification 218,137, [Class 108 (iii), Springs &c.], is referred to.